Feedback
Settings

Settings

Goto Application

1. WO2022114806 - OPTICAL INTERFERENCE-TYPE LIDAR SYSTEM ACTIVELY SELECTING OPTICAL PATH ACCORDING TO LENGTH OF REFERENCE END AND THEREBY ADJUSTING CENTRAL MEASUREMENT RANGE

Submit observation
PermaLink
Publication Number WO/2022/114806
Publication Date 02.06.2022
International Application No. PCT/KR2021/017484
International Filing Date 25.11.2021
IPC
G01S 7/497 2006.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
497Means for monitoring or calibrating
G01S 7/481 2006.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
481Constructional features, e.g. arrangements of optical elements
G01S 7/4913 2020.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
491Details of non-pulse systems
4912Receivers
4913Circuits for detection, sampling, integration or read-out
G01S 17/02 2006.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
G02B 6/293 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
293with wavelength selective means
G02B 6/35 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
35having switching means
CPC
G01N 2021/458
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
41Refractivity; Phase-affecting properties, e.g. optical path length
45using interferometric methods; using Schlieren methods
458using interferential sensor, e.g. sensor fibre, possibly on optical waveguide
G01N 21/45
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
41Refractivity; Phase-affecting properties, e.g. optical path length
45using interferometric methods; using Schlieren methods
G01S 17/02
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
G01S 17/58
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
50Systems of measurement based on relative movement of target
58Velocity or trajectory determination systems; Sense-of-movement determination systems
G01S 7/481
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
481Constructional features, e.g. arrangements of optical elements
G01S 7/4816
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
481Constructional features, e.g. arrangements of optical elements
4816of receivers alone
Applicants
  • 부산대학교 산학협력단 PUSAN NATIONAL UNIVERSITY INDUSTRYUNIVERSITY COOPERATION FOUNDATION [KR]/[KR]
Inventors
  • 김창석 KIM, Changseok
  • 박성진 BAK, Seongjin
  • 장한솔 JANG, Hansol
  • 박창현 PARK, Changhyun
Agents
  • 오위환 OH, Wihwan
Priority Data
10-2020-016500430.11.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) OPTICAL INTERFERENCE-TYPE LIDAR SYSTEM ACTIVELY SELECTING OPTICAL PATH ACCORDING TO LENGTH OF REFERENCE END AND THEREBY ADJUSTING CENTRAL MEASUREMENT RANGE
(FR) SYSTÈME LIDAR DE TYPE À INTERFÉRENCE OPTIQUE SÉLECTIONNANT ACTIVEMENT UN CHEMIN OPTIQUE SELON LA LONGUEUR D'UN TERMINAL DE RÉFÉRENCE ET RÉGLANT AINSI LA PLAGE CENTRALE DE MESURE
(KO) 기준단의 길이별 광경로를 능동적으로 선택하여 중심 측정 범위를 조절하는 광간섭형 라이다 시스템
front page image
Abstract
(EN) The present invention relates to an optical interference-type lidar system which actively selects an optical path according to the length of a reference end and thereby adjusts a central measurement range according to the absolute position of an object to be measured, the lidar system comprising: a laser light source unit for emitting variable wavelength light; a light splitting unit for splitting the light into light that travels to a variable reference end and light that travels to a measurement end; the variable reference end structured so as to be capable of selecting the optical path length of the reference end; the measurement end which transmits light and receives light reflected from the object to be measured; and a light detection unit for detecting an optical signal generated due to optical interference between light that has passed through the variable reference end and light that has passed through the measurement end. The central measurement range, in which the greatest relative optical interference intensity is detected, is adjusted by actively selecting the reference end optical path length which varies at the variable reference end.
(FR) La présente invention concerne un système lidar de type à interférence optique, qui sélectionne activement un chemin optique selon la longueur d'un terminal de référence et qui règle ainsi une plage centrale de mesure selon la position absolue d'un objet à mesurer. Le système lidar comprend : une unité source lumineuse à laser, permettant d'émettre une lumière à longueur d'onde variable ; une unité de division de lumière, permettant de diviser la lumière en une lumière destinée à un terminal de référence variable et en une lumière destinée à un terminal de mesure ; le terminal de référence variable, structuré pour pouvoir sélectionner la longueur de chemin optique du terminal de référence ; le terminal de mesure, qui transmet la lumière et qui reçoit la lumière réfléchie par l'objet à mesurer ; et une unité de détection lumineuse, permettant de détecter un signal optique généré par une interférence optique entre la lumière ayant traversé le terminal de référence variable et la lumière ayant traversé le terminal de mesure. La plage de mesure centrale dans laquelle est détectée la plus grande intensité relative d'interférence optique est réglée par sélection active de la longueur de chemin optique de terminal de référence, qui varie au niveau du terminal variable de référence.
(KO) 본 발명은 측정하는 물체의 절대적 위치에 따라서 기준단의 길이별 광경로를 능동적으로 선택하여 중심 측정 범위를 조절하는 광간섭형 라이다 시스템에 관한 것으로, 파장이 가변하는 광을 방출하는 레이저 광원부;상기 광을 가변기준단과 측정단으로 나누는 광분할부;기준단의 광경로 길이를 선택할 수 있는 구조로 이루어진 가변기준단;광을 전파시키고 측정 물체에서 반사된 광을 받아들이는 측정단;상기 가변기준단을 지나온 광과 상기 측정단을 지나온 광이 광간섭을 일으켜서 생기는 광신호를 검출하는 광검출부; 를 포함하고, 상기 가변기준단에서 가변되는 기준단의 광경로 길이의 능동적 선택에 따라, 상대적인 최대의 광간섭 세기가 검출되는 중심 측정 범위를 조절하는 것이다.
Related patent documents
KR1020220076146
US20220171035
Latest bibliographic data on file with the International Bureau
# -